Didn't get Kate capshaws character

So they seemed to be in a decent relationship and she almost seemed to sabotage it at the parents place. Her behavior really confused me. Maybe she just drank too much?

Did love how all males in his family were "fixated" on her lol. Damn Kate was MILFy as all hell in this on though!

Amy: I swear to God...I swear to God! That is NOT how you treat your human!